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Title: yanyan Download
 Description: 1. Get a grey level image which size is N*N. (For example, 256*256, however, N = ), and partition to 8*8 sub images. 2. Apply DFT to these sub images, and get the fourier transformed image F. 3. Derive the proper subsampling function matrix S in spatial domain. 4. Multiplying proper 4*4 DFT matrix T to matrix S, derive the frequency version of subsampling function matrix, S. 5. Similarly, derive the frequency version of interpolation matrix, I. 6. Apply these matrices to each sub image of F (which is DFT of original image), and get the final image, taking inverse DFT. 7. Apply subsampling/interpolation function matrix S/I to original image in spatial domain and get the final image. 8. Compare the results from 6, 7.
 Downloaders recently: [More information of uploader zy16at]
 To Search: inverse image function
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